RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Site Query Results

Binding Site Data:

Mineral:	Hematite
Reference:	LCV99
SCM Type:	CC - Constant Capacitance (C₁: 1.98 F/m²)
Ionic Strength:	0.1 mol/L of NaNO3
Site Type:	»Fe-OH
PZC:	8.48
pK1:	8.08	pK1°_I=0 (Conversion to I = 0):	7.97	pK1_{2.31 nm⁻²} (normalized):	8.03
pK2:	8.82	pK2°_I=0 (Conversion to I = 0):	8.71	pK2_{2.31 nm⁻²} (normalized):	8.87
Site Density in nm^-2:	2.0700
Original Site Density:	2.07 sites / nm² surface
Solid/Liquid Ratio in g/L:	0.53
pH Range:	4-9
Temperature in K:	298.15
Method for Site Density:	Potentiometric Titration
Method for Protolysis:	Potentiometric Titration
Fit Method:	GRFIT
Comment:	PZC=PZNPC; surface site concentration 2E-4 mol/L (assumption that each surface hydroxyl can bind one proton, asymptotic surface charge at pH<=4); Ar atmosphere; temperature 25+-0.3°C

1 data sets were retrieved